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“If there was just one tool that no (back to school) Maker should be without, what would it be?” This may just be the tool we’d pick. This great little book is a concise all-purpose reference featuring hundreds of tables, maps, formulas, constants & conversions and it still fits in your shirt pocket! Packed with mathematical formula, tables, standard conversion ratio, scientific fact, technical specification, electric wire size vs. load, resistor color codes, Morse code, sun & planet data, earthquake scales, nail sizes, geometry formulas, currency exchange rates, carpentry, automotive, physical science, water friction losses, charts for battery charging, lumber sizes & grades, floor joint span limits, insulation R values, periodic table, and as they say, much, much more! It’s no wonder The Pocket Ref was featured in MythBusters…

To win one TODAY 8/21/07 – post a sentence or so in the comments how and why you’d use it at the end of the day (11:59pm PDT) and I’ll pick one, make it good! If you missed out today, we’ll do this again soon – or just get a Pocket Ref in the Maker store… Link.

Phillip Torrone

Editor at large – Make magazine. Creative director – Adafruit Industries, contributing editor – Popular Science. Previously: Founded – Hack-a-Day, how-to editor – Engadget, Director of product development – Fallon Worldwide, Technology Director – Braincraft.


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